import java.util.*;

public class Test2 {

    public static void main1(String[] args) {
        Map<String,Integer> map1 = new HashMap<>();
        Map<String,Integer> map2 = new TreeMap<>();

        Set<String> set1 = new HashSet<>();
        Set<String> set2 = new TreeSet<>();

    }

    public static void main(String[] args) {
        Map<String,Integer> map1 = new HashMap<>();
        map1.put("hrllo",2);
        System.out.println(map1);
    }
}
